EP0934710A2 - Support sleeve for a washing brush - Google Patents

Abstract

The carrying sleeve has clamping pins (22) which are formed as hinge pins with a rotation lock (24) and a spreading shaft (23). The shaft is thinner in the narrow side with the trimming loop (21) and is thicker at the wide side with the trimming loop than the access opening (20) of the gripping groove (19).

Description

The invention relates to a support sleeve for a washing brush of car washes with the features in the preamble of Main claim.

Such a support sleeve is known from US-A-4,338,698. It has several clamping grooves on the circumference for receiving Loops of the brush trim. For fixation Clamping pins are provided which are stuck in the loop the clamping groove are inserted. With the shown Terminal arrangement is only an axial assembly of the Carrying sleeve with the brush trim possible. In addition, the Trim loop with the inserted pin under Clamping tension can be inserted into the groove. This complicates and increases the cost of assembly.

It is therefore an object of the present invention to to show improved support sleeve.

The invention solves this problem with the features in the main claim.
The inventive design of the support sleeve facilitates the assembly of the brush trimmings. The design of the clamping pins as rotary pins with a widened shaft means that assembly can be carried out largely without clamping voltage. The clamping force or clamping voltage is only produced after the rotary pin has been actuated. With the rotation lock, the pivot pin can be fixed in the desired locking position. In addition, the support sleeve according to the invention has the advantage that radial mounting of the brush trim is also possible. With appropriate adaptation of the shaft dimensions of the clamping pin to the access opening of the clamping groove, the trimmings loops can be inserted radially into the clamping grooves with the clamping pin. This makes assembly easier. In particular, the brush trim can also be assembled by hand and, if necessary, replaced in places in the event of wear or damage.

In this context, it is also an advantage if the support sleeve is divided into several sleeve rings, that can be assembled individually. Due to the Vehicle contour is created with the washing brushes Length mostly an uneven brush wear. By the subdivision of the support sleeve according to the invention was sufficient then, only the sleeve rings in the wear-prone area replace and the sleeve rings with the still usable Leave brush trimmings. In addition, the sleeve rings can be interchanged to compensate for wear. Compared to the state of the art, which is usually due to wear requires a complete replacement of the brushes, is with possible partial exchange of the invention essential cheaper and easier. They can also Maintenance and exchange work also by the operator of the Car wash and do not require any Skilled personnel.

In this context, it is also convenient to use the support sleeve to mount on a support tube and thereby a Inner guide for the support sleeve or sleeve rings to have. Such training facilitates maintenance and Exchanges. In addition, the support sleeve relieves the strain and can be done from a less firm Material, e.g. Plastic.

It is recommended for the rotation locking of the clamping pin yourself to attach an external handle to the pen that in the fixing position in an end groove on the Carrying sleeve engages and thereby locked positively can be. With a corresponding axial disc or this can be done by an adjacent sleeve ring Also secure the fixing position in which the Axial movement of the clamping pin is blocked. Such Rotary lock is primarily for manual assembly and Exchange work is advantageous and suitable equally for a machine and automatic Assembly. The rotation lock further facilitates later maintenance and replacement work.

If an internal support tube is arranged, it is cheap, through a mutual profiling rotational connection between support sleeve and support tube to manufacture. Additional fixation measures for the This eliminates turning entrainment. Of special It is advantageous if the support tube is on the outside Ribs and the corresponding support grooves exhibit. This allows the one hand Optimize material use and on the other hand an optimal one Achieve strength of the support tube. The outside Ribs of the support tube can also be internal Mounting holes, e.g. Screw openings for direct Have attachment to the motor flange. A special radially protruding pipe flange is therefore unnecessary. In addition, due to the outer ribs Screw holes or fastening screws a larger one Center distance and can transmit larger moments.

It is also recommended that the outside diameter of the Support sleeve to choose equal or larger than 120mm. this has with regard to improved dimensional stability a brush set made of textile strips or Foam strips proved to be cheap.

In the subclaims are further advantageous Embodiments of the invention specified.

Figur 1:

eine Waschbürste mit einer Traghülse und einem Tragrohr im Querschnitt,

Figur 2:

einen abgebrochenen Längsschnitt durch die Waschbürste mit einem Motor,

Figur 3:

eine vergrößerte Querschnittsdarstellungen der Traghülse,

Figur 4:

eine Variante zu Figur 3 in Querschnittsdarstellung,

Figur 5:

einen Schnitt durch die Traghülse von Figur 4 entsprechend Schnittlinie V-V,

Figur 6:

einen Klemmstift in verschiedenen Ansichten,

Figur 7:

eine Variante zu Figur 3 und 4 in Querschnittsdarstellung und

Figur 8:

eine weitere Variante zu Figur 3, 4 und 7 in Querschnittsdarstellung.

The invention is shown in the drawings, for example and schematically. In detail show:

Figure 1:

a washing brush with a support sleeve and a support tube in cross section,

Figure 2:

a broken longitudinal section through the washing brush with a motor,

Figure 3:

an enlarged cross-sectional view of the support sleeve,

Figure 4:

3 shows a variant of FIG. 3 in cross-sectional representation,

Figure 5:

3 shows a section through the support sleeve of FIG. 4 according to section line VV,

Figure 6:

a pin in different views,

Figure 7:

a variant of Figures 3 and 4 in cross-sectional view and

Figure 8:

another variant of Figure 3, 4 and 7 in cross-sectional view.

Figures 1 and 2 show in cross section and broken Longitudinal section of a washing brush (1) for car washes. It consists of an inner support tube (2) and a support sleeve (9) mounted on the outside thereof the brush trim (10) is attached. Of the Brush trimmings can be of any type and e.g. from thin Plastic threads, strips of textile material or Foam, textile rag or the like exist. The Washing brush (1) is driven by a motor (14) a motor flange (13) which is connected to the support tube (2) connected, preferably screwed.

The support tube is preferably drawn or extruded light metal tube formed and has several longitudinal ribs (5), at least on the front ends of fastening openings (11) with a Screw thread or the like for connection to the Have motor flange (13). The mounting holes (11) are arranged in a circle around the pipe axis (6). In the Ribs (5) can also have through holes be.

As shown in Figure 1, 3, 7 and 8 in cross section the support tube (2) has a profiled outer contour (7). On this outer contour (7) is the support sleeve (9) for the Brush trim arranged. She has one Counter-profiling (15) and is rotatably on it Support tube (2) held. The counter-profiling (15) can Fully or partially rest on the outer contour (7).

The profiling of the outer contour (7) of the support tube (2) is preferably formed by the ribs (5) on The support tube (2) is on the outside. In addition, deformations of the pipe wall. The ribs (5) are preferably narrow and just so thick that the Pick up the fastening openings (11). The Ribs (5) bulge radially outwards over the normal Outer tube circumference. The mounting holes (11) are also far outside and are outside the normal pipe outer circumference. Due to the large distance of the Fastening openings (11) can generate high drive torques be transmitted. Alternatively, the Pipe diameter can be reduced.

The positive connection between the support tube (2) and the support sleeve (9) lies in the region of the ribs (5) and the mounting holes (11). The mounting holes (11) are therefore also in the area of the support sleeve (9).

Figures 3 and 8 show a support tube variant in the form of a Circular tube (3) with external ribs (5). On the inside, the cylindrical inner tube wall serves as Centering surface (12) for the motor flange (13). Ribs (5) protrude beyond the outer wall of the circular tube (3).

In the variant of Figure 7, the support tube (2) is as Profile tube (4) formed, the tube wall Wave profile with external ribs (5) having. The pipe wall has between the ribs (5) concave indentations (8) leading to the interior Pipe axis (6) are curved. This even and form indentations (8) distributed regularly in a circle with their inner vertices an enveloping circle, which also has a centering surface (12) for the Motor flange (13) creates. With this design, the Ribs projecting outwards over the tube wall (5) together with the indentations (8) for the positive connection between the support tube (2) and support sleeve (9). The Fastening openings (11) are in both Variants of Figure 3, 7 and 8 with a radial distance outside the centering surfaces (12) or enveloping circles.

The support tube (2) or the support sleeve (9) have one Outside diameter that is equal to or greater than 120 mm. As a result, the brush trim (10) has a corresponding one Distance from the inner pipe axis (6). At given outer diameter of the washing brush (1) especially one made of textile or foam strips existing brush trimmings (10) more stable in use as a horizontal roof brush. The brush trim (10) falls therefore not so easy when rotating, but remains stable. The washing brush (1) runs more smoothly. Drumming symptoms are avoided.

As shown in Figures 3 to 6 in detail, the Brush trim (10) via external clamping grooves (19) attached to the support sleeve (9). The clamping grooves (19) have essentially a circular cross section with a outwardly narrowed access opening (20). Of the Cross-section can alternatively also have a different shape, e.g. B. have an oval shape or the like. The clamping grooves (19) are even on the outer circumference of the support sleeve (9) distributed. The groove walls can be in the area of Giving the access opening (20) a little resilient if necessary.

The brush trim (10) shown in the Embodiment preferably made of rags or strips a textile material or a foam is via a loop (21) with an inside Clamping pin (22) fastened in the clamping grooves (19). The Trim loop (21) can be as shown in the Embodiment have a short length and on the one end protruding from the clamping groove (19) be cut off. Both ends can also be the same be long and as washing or polishing elements of the Brush trim (10) serve.

As shown in Figure 6, the clamping pin (22) has one widened shaft (23), which in cross section e.g. one in has an essentially rectangular or oval shape. At the There is a handle (28) on the upper shaft end which connects to the Narrow sides of the shaft (23) protrudes and on the Broad side connects flush to the shaft (23). The Narrow sides of the shaft (23) and handle (28) are together with the trimming loop (21) thinner than that Access opening (20) of the clamping grooves (19). The broadside the shaft (23) together with the stocking loop (21) however thicker than the access opening (20). Through this Design can be the trimming loop (21) with the inserted clamping pin (22) radially from the outside into the Clamping grooves (19) inserted through the access opening (20) become. The clamping pin (22) is in the Insertion position rotated so that it is with its narrow side to the access opening (20). To fix the Brush trim (10), the clamping pin (22) by 90 ° in a locked position can be rotated and prevented by its widened shaft and with its back Access opening (20) facing broadside Slip out the trimming loop (21) from the clamping groove (19). Figures 3 and 4 show the insertion position and the Locking position of the clamping pin (22).

Alternatively, the trimming loop (21) and the Clamping pin (22) in the aforementioned insertion position can also be inserted axially into the clamping groove (19). Of the The clamping pin (22) is then in the Locked position turned.

The clamping pin (22) is designed as a pivot pin and has a rotation lock (24) with which it can be locked in the Locked position can be held in the clamping groove (19). The rotation lock (24) can be in any suitable manner be trained. In the embodiment shown it by the handle (28) in conjunction with a end annular groove (25) formed on the support sleeve (9). When inserting the trimming loop (21) with the clamping pin (22) the handle (28) stands axially over the support sleeve (9) in front. After turning 90 ° from the insertion position to the The locking position of the handle (28) is then along the ring groove (25) and can be locked in the corresponding width Ring groove (25) are inserted. The clamping pin (22) with the handle (28) has a length which is preferably the Length of the support sleeve (9) corresponds.

The support sleeve (9) can consist of one piece and itself Extend the entire length of the support tube (2). Alternatively, the support sleeve (9) can also be in several sleeve rings (18) can be divided. Figure 1 shows this design. In this case, the aforementioned apply Design features for the support sleeve (9) accordingly also for the individual sleeve rings (18).

Corresponding to the sleeve subdivision is Brush trim (10) in length in several sections divided. The support sleeves (18) are preferred pushed one behind the other onto the support tube (2) and held on it in a rotationally locking manner. You encounter the front to each other and together form a unified Sleeve contour, with the trim sections accordingly work together. When local occurs Signs of wear on the brush trim (10) can or several individual support sleeves (18) with their Trim sections are removed and replaced. Here is also an exchange of sleeve rings (18) with each other possible.

As illustrated in Figures 3 to 5, the sleeve rings (18) or the support sleeve (9) recesses (17) in the area the inner bore (27) and / or recesses (26) in Have the outer area between the clamping grooves (19). The Recesses (26) are e.g. designed as axial bores. The recesses (17.26) can on the one hand Serve material savings. In addition, the recesses (17.26) facilitate assembly and the support sleeve (9) or give the sleeve rings (18) a certain elasticity, if so desired.

Figure 8 shows a further variant. Here is the Number of ribs (5) on the support tube (2) less than the number the receiving grooves (16). In the variant shown are twice as many grooves (16) as ribs (5) available. The number ratio can also be different be. With this design, the support sleeve (9) or the sleeve rings (18) have different angular positions take the support tube (2). Depending on the number and assignment of Clamping grooves (19) can also be used with the support sleeves (18) twist the trim sections against each other and around arrange a small angle. The free Recording grooves (16) can in the variant of Figure 8 same function as the recesses (17) in the Have embodiment of Figure 3.

Variations of the embodiment shown are in FIG possible in different ways. For example, the support sleeve (9) be self-supporting and the support tube (2) replace. You will then be directly with the appropriate Motor (14) connected. Furthermore, the support tube (2) can have any other shape, the rotatable Connection via wedges or a tongue and groove connection can take place as e.g. indicated in Figures 4 and 5 is. The number and distribution of the Clamping grooves (19). Also the number of ribs (5) and the Recording grooves (16) can be changed. In addition, the Support sleeve (9) or the sleeve rings (18) and the support tube (2) consist of any suitable material, e.g. Steel, and made in any suitable manner become.

REFERENCE SIGN LIST

1

Washing brush

2nd

Support tube

3rd

Circular tube

4th

Profile tube

5

Rib, bead

6

Pipe axis

7

Outer contour

8th

indentation

9

Support sleeve

10th

Brush trim, brush hair

11

Fastening opening, screw opening

12th

Centering surface, inner centering

13

Motor flange

14

engine

15

Counter-profiling

16

Groove

17th

Recess, circumferential

18th

Sleeve ring

19th

Clamping groove

20th

Access opening

21

Trimming loop

22

Clamping pin

23

shaft

24th

Rotation lock

25th

Ring groove

26

Recess, axial bore

27

Inner bore

28

Handle

Claims (10)

Carrying sleeve for a washing brush (1) of car wash systems with a plurality of clamping grooves (19) with insertable clamping pins (22) for receiving loops (21) of the brush set (10), characterized in that the clamping pins (22) act as turning pins with a rotation lock (24 ) and an enlarged shaft (23) are formed. Carrying sleeve according to claim 1, characterized in that the shaft (23) on the narrow side with the trimming loop (21) is thinner and on the broad side with the trimming loop (21) is thicker than the access opening (20) of the clamping groove (19). Carrying sleeve according to claim 1 or 2, characterized in that the rotary lock (24) has a handle (28) on the clamping pin (22) and an end annular groove (25) on the carrying sleeve (9). Support sleeve according to claim 1, 2 or 3, characterized in that the support sleeve (9) is divided into a plurality of individually mountable sleeve rings (18). Support sleeve according to one of claims 1 to 4, characterized in that the support sleeve (9) has a profiled (15) inner bore (27) for the positive and rotational connection with a support tube (2) with a profiled outer contour (7). Support sleeve according to claim 5, characterized in that the support sleeve (9) has longitudinally extending receiving grooves (16) for external ribs (5) of the support tube (2) on the inner bore (27). Support sleeve according to claim 6, characterized in that the number of receiving grooves (16) is greater than the number of ribs (5). Support sleeve according to claim 5, 6 or 7, characterized in that the support sleeve (9) has a substantially circular inner bore (27). Support sleeve according to claim 5, 6 or 7, characterized in that the support sleeve (9) has a corrugated inner bore (27), the support tube (2) as a profile tube (4) with external ribs (5) and recesses (8) between them Pipe wall is formed. Support sleeve according to one of claims 1 to 9, characterized in that the support sleeve (9) has recesses (17, 26) in the region of the inner bore (27) and / or between the clamping grooves (19).

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